a cloud of a class characterized by a gray, horizontal layer with a uniform base, found at a lower altitude than altostratus, usually below 8,000 feet (2,400 meters).
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use stratus in a sentence
The appearance of the cumulo-stratus, among ranges of hills, presents some interesting phenomena.
The cumulo-stratus, when well formed and seen singly, and in profile, is quite as beautiful an object as the cumulus.
This cloud may either evaporate or disappear, or it may pass to the cirrus, or sink lower and become a cirro-stratus.
The stratus, from its spreading out horizontally in a continuous layer, and increasing from below.
The cumulo-stratus is more dense and continuous in its structure; thick in the middle, and thinned off towards the edges.
British Dictionary definitions for stratus
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for stratus
A diffuse, grayish cloud that often produces drizzle and is formed primarily in altitudes no higher than 2,000 m (6,560 ft). A stratus cloud close to the ground or water is called fog. See illustration at cloud.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.